Grog is a term used for a variety of alcoholic beverages. The word originally referred to rum diluted with water (and later on long sea voyages, also added the juice of limes or lemons), which Edward Vernon introduced into the British naval squadron he commanded in the West Indies on 21 August 1740. Vernon wore a coat of grogram cloth and was nicknamed Old Grogram or Old Grog. The Merriam–Webster Collegiate Dictionary, which agrees with this story of the word's origin, states that the word grog was first used in this sense in 1770, though other sources cite 1749. In modern times, the term grog has had a variety of meanings in a number of different cultures, but is commonly used in Australia and New Zealand where it is a slang word for alcohol. In north German culture, Grog is a "classic winter drink from East Frisia" made of rum, sugar and water and heated to boiling point. In Swedish, a "grogg" means a highball drink.